/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 10:11:18,369 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 10:11:18,490 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 10:11:18,495 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 10:11:18,496 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 10:11:18,535 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 10:11:18,536 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 10:11:18,537 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 10:11:18,537 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 10:11:18,543 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 10:11:18,543 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 10:11:18,544 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 10:11:18,545 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 10:11:18,546 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 10:11:18,546 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 10:11:18,546 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 10:11:18,546 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 10:11:18,546 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 10:11:18,547 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 10:11:18,547 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 10:11:18,547 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 10:11:18,548 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 10:11:18,548 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 10:11:18,548 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 10:11:18,549 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 10:11:18,549 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 10:11:18,549 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 10:11:18,549 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 10:11:18,552 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 10:11:18,552 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 10:11:18,553 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 10:11:18,553 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 10:11:18,553 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 10:11:18,553 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 10:11:18,553 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 10:11:18,554 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 10:11:18,554 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 10:11:18,554 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 10:11:18,554 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 10:11:18,554 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 10:11:18,554 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 10:11:18,560 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 10:11:18,560 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 10:11:18,560 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 10:11:18,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 10:11:18,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 10:11:18,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 10:11:18,843 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 10:11:18,844 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 10:11:18,844 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product47.cil.c [2023-12-21 10:11:20,021 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 10:11:20,275 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 10:11:20,275 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product47.cil.c [2023-12-21 10:11:20,290 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2dff05b1/7962bc5f747744869cc38c42eb55a101/FLAG260723305 [2023-12-21 10:11:20,307 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2dff05b1/7962bc5f747744869cc38c42eb55a101 [2023-12-21 10:11:20,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 10:11:20,311 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 10:11:20,312 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 10:11:20,312 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 10:11:20,316 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 10:11:20,317 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:11:20" (1/1) ... [2023-12-21 10:11:20,318 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b9be5f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:11:20, skipping insertion in model container [2023-12-21 10:11:20,318 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:11:20" (1/1) ... [2023-12-21 10:11:20,359 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 10:11:20,487 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product47.cil.c[1605,1618] [2023-12-21 10:11:20,601 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 10:11:20,617 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 10:11:20,625 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [49] [2023-12-21 10:11:20,627 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [58] [2023-12-21 10:11:20,627 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [96] [2023-12-21 10:11:20,627 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [462] [2023-12-21 10:11:20,627 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [503] [2023-12-21 10:11:20,627 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [605] [2023-12-21 10:11:20,628 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [703] [2023-12-21 10:11:20,628 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [916] [2023-12-21 10:11:20,649 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product47.cil.c[1605,1618] [2023-12-21 10:11:20,720 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 10:11:20,740 INFO L206 MainTranslator]: Completed translation [2023-12-21 10:11:20,741 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:11:20 WrapperNode [2023-12-21 10:11:20,741 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 10:11:20,742 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 10:11:20,742 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 10:11:20,742 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 10:11:20,748 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:11:20" (1/1) ... [2023-12-21 10:11:20,771 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:11:20" (1/1) ... [2023-12-21 10:11:20,801 INFO L138 Inliner]: procedures = 56, calls = 102, calls flagged for inlining = 22, calls inlined = 19, statements flattened = 196 [2023-12-21 10:11:20,802 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 10:11:20,802 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 10:11:20,803 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 10:11:20,803 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 10:11:20,812 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:11:20" (1/1) ... [2023-12-21 10:11:20,813 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:11:20" (1/1) ... [2023-12-21 10:11:20,815 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:11:20" (1/1) ... [2023-12-21 10:11:20,831 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-12-21 10:11:20,831 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:11:20" (1/1) ... [2023-12-21 10:11:20,832 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:11:20" (1/1) ... [2023-12-21 10:11:20,839 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:11:20" (1/1) ... [2023-12-21 10:11:20,851 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:11:20" (1/1) ... [2023-12-21 10:11:20,852 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:11:20" (1/1) ... [2023-12-21 10:11:20,853 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:11:20" (1/1) ... [2023-12-21 10:11:20,855 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 10:11:20,856 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 10:11:20,856 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 10:11:20,856 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 10:11:20,857 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:11:20" (1/1) ... [2023-12-21 10:11:20,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 10:11:20,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:11:20,884 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-12-21 10:11:20,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-12-21 10:11:20,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 10:11:20,930 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2023-12-21 10:11:20,930 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2023-12-21 10:11:20,931 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-12-21 10:11:20,931 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-12-21 10:11:20,931 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-12-21 10:11:20,931 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-12-21 10:11:20,931 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2023-12-21 10:11:20,931 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2023-12-21 10:11:20,931 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2023-12-21 10:11:20,931 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2023-12-21 10:11:20,931 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2023-12-21 10:11:20,931 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2023-12-21 10:11:20,932 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2023-12-21 10:11:20,932 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2023-12-21 10:11:20,932 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2023-12-21 10:11:20,932 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2023-12-21 10:11:20,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 10:11:20,933 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2023-12-21 10:11:20,933 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2023-12-21 10:11:20,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 10:11:20,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 10:11:21,028 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 10:11:21,032 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 10:11:21,311 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 10:11:21,386 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 10:11:21,386 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-21 10:11:21,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:11:21 BoogieIcfgContainer [2023-12-21 10:11:21,387 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 10:11:21,389 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 10:11:21,389 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 10:11:21,396 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 10:11:21,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 10:11:20" (1/3) ... [2023-12-21 10:11:21,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15a2e9b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 10:11:21, skipping insertion in model container [2023-12-21 10:11:21,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:11:20" (2/3) ... [2023-12-21 10:11:21,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15a2e9b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 10:11:21, skipping insertion in model container [2023-12-21 10:11:21,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:11:21" (3/3) ... [2023-12-21 10:11:21,401 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product47.cil.c [2023-12-21 10:11:21,417 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 10:11:21,417 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 10:11:21,458 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 10:11:21,463 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4faabb8a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 10:11:21,463 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 10:11:21,467 INFO L276 IsEmpty]: Start isEmpty. Operand has 82 states, 55 states have (on average 1.509090909090909) internal successors, (83), 64 states have internal predecessors, (83), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2023-12-21 10:11:21,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-21 10:11:21,479 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:11:21,480 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:11:21,480 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:11:21,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:11:21,485 INFO L85 PathProgramCache]: Analyzing trace with hash 2041542024, now seen corresponding path program 1 times [2023-12-21 10:11:21,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:11:21,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584979197] [2023-12-21 10:11:21,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:11:21,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:11:21,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:21,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 10:11:21,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:21,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 10:11:21,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:11:21,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584979197] [2023-12-21 10:11:21,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584979197] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:11:21,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:11:21,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 10:11:21,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032103921] [2023-12-21 10:11:21,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:11:21,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 10:11:21,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:11:21,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 10:11:21,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 10:11:21,721 INFO L87 Difference]: Start difference. First operand has 82 states, 55 states have (on average 1.509090909090909) internal successors, (83), 64 states have internal predecessors, (83), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-21 10:11:21,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:11:21,801 INFO L93 Difference]: Finished difference Result 162 states and 231 transitions. [2023-12-21 10:11:21,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 10:11:21,803 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-12-21 10:11:21,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:11:21,812 INFO L225 Difference]: With dead ends: 162 [2023-12-21 10:11:21,812 INFO L226 Difference]: Without dead ends: 77 [2023-12-21 10:11:21,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 10:11:21,820 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:11:21,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 96 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 10:11:21,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-12-21 10:11:21,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2023-12-21 10:11:21,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 52 states have (on average 1.4038461538461537) internal successors, (73), 60 states have internal predecessors, (73), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2023-12-21 10:11:21,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 104 transitions. [2023-12-21 10:11:21,868 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 104 transitions. Word has length 17 [2023-12-21 10:11:21,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:11:21,869 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 104 transitions. [2023-12-21 10:11:21,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-21 10:11:21,869 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 104 transitions. [2023-12-21 10:11:21,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-12-21 10:11:21,873 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:11:21,873 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:11:21,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 10:11:21,873 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:11:21,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:11:21,876 INFO L85 PathProgramCache]: Analyzing trace with hash 497982506, now seen corresponding path program 1 times [2023-12-21 10:11:21,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:11:21,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544711796] [2023-12-21 10:11:21,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:11:21,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:11:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:21,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-21 10:11:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:22,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 10:11:22,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:11:22,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544711796] [2023-12-21 10:11:22,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544711796] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:11:22,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:11:22,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 10:11:22,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182928297] [2023-12-21 10:11:22,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:11:22,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 10:11:22,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:11:22,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 10:11:22,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 10:11:22,004 INFO L87 Difference]: Start difference. First operand 77 states and 104 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-21 10:11:22,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:11:22,045 INFO L93 Difference]: Finished difference Result 124 states and 166 transitions. [2023-12-21 10:11:22,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 10:11:22,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-12-21 10:11:22,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:11:22,048 INFO L225 Difference]: With dead ends: 124 [2023-12-21 10:11:22,048 INFO L226 Difference]: Without dead ends: 69 [2023-12-21 10:11:22,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 10:11:22,051 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 14 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:11:22,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 147 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 10:11:22,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-12-21 10:11:22,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2023-12-21 10:11:22,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 47 states have (on average 1.425531914893617) internal successors, (67), 55 states have internal predecessors, (67), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-21 10:11:22,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 93 transitions. [2023-12-21 10:11:22,059 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 93 transitions. Word has length 18 [2023-12-21 10:11:22,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:11:22,060 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 93 transitions. [2023-12-21 10:11:22,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-21 10:11:22,060 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 93 transitions. [2023-12-21 10:11:22,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-21 10:11:22,061 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:11:22,061 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:11:22,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 10:11:22,062 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:11:22,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:11:22,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1916543307, now seen corresponding path program 1 times [2023-12-21 10:11:22,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:11:22,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706853467] [2023-12-21 10:11:22,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:11:22,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:11:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:22,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-21 10:11:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:22,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 10:11:22,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:11:22,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706853467] [2023-12-21 10:11:22,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706853467] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:11:22,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:11:22,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 10:11:22,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100724499] [2023-12-21 10:11:22,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:11:22,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 10:11:22,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:11:22,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 10:11:22,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 10:11:22,186 INFO L87 Difference]: Start difference. First operand 69 states and 93 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-21 10:11:22,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:11:22,265 INFO L93 Difference]: Finished difference Result 203 states and 276 transitions. [2023-12-21 10:11:22,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 10:11:22,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2023-12-21 10:11:22,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:11:22,267 INFO L225 Difference]: With dead ends: 203 [2023-12-21 10:11:22,267 INFO L226 Difference]: Without dead ends: 136 [2023-12-21 10:11:22,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 10:11:22,270 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 80 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:11:22,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 176 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:11:22,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-12-21 10:11:22,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 133. [2023-12-21 10:11:22,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 90 states have (on average 1.4333333333333333) internal successors, (129), 105 states have internal predecessors, (129), 26 states have call successors, (26), 16 states have call predecessors, (26), 16 states have return successors, (26), 19 states have call predecessors, (26), 26 states have call successors, (26) [2023-12-21 10:11:22,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 181 transitions. [2023-12-21 10:11:22,292 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 181 transitions. Word has length 21 [2023-12-21 10:11:22,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:11:22,293 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 181 transitions. [2023-12-21 10:11:22,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-21 10:11:22,293 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 181 transitions. [2023-12-21 10:11:22,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-21 10:11:22,294 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:11:22,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:11:22,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 10:11:22,295 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:11:22,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:11:22,295 INFO L85 PathProgramCache]: Analyzing trace with hash -49260481, now seen corresponding path program 1 times [2023-12-21 10:11:22,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:11:22,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442087374] [2023-12-21 10:11:22,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:11:22,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:11:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:22,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-12-21 10:11:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:22,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-21 10:11:22,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:11:22,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442087374] [2023-12-21 10:11:22,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442087374] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:11:22,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:11:22,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-21 10:11:22,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12814000] [2023-12-21 10:11:22,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:11:22,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-21 10:11:22,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:11:22,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-21 10:11:22,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 10:11:22,360 INFO L87 Difference]: Start difference. First operand 133 states and 181 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-21 10:11:22,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:11:22,408 INFO L93 Difference]: Finished difference Result 264 states and 364 transitions. [2023-12-21 10:11:22,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-21 10:11:22,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2023-12-21 10:11:22,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:11:22,414 INFO L225 Difference]: With dead ends: 264 [2023-12-21 10:11:22,414 INFO L226 Difference]: Without dead ends: 262 [2023-12-21 10:11:22,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-21 10:11:22,416 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 69 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:11:22,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 159 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 10:11:22,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2023-12-21 10:11:22,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 262. [2023-12-21 10:11:22,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 177 states have (on average 1.4293785310734464) internal successors, (253), 206 states have internal predecessors, (253), 52 states have call successors, (52), 32 states have call predecessors, (52), 32 states have return successors, (56), 38 states have call predecessors, (56), 52 states have call successors, (56) [2023-12-21 10:11:22,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 361 transitions. [2023-12-21 10:11:22,465 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 361 transitions. Word has length 24 [2023-12-21 10:11:22,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:11:22,466 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 361 transitions. [2023-12-21 10:11:22,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-21 10:11:22,466 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 361 transitions. [2023-12-21 10:11:22,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-21 10:11:22,469 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:11:22,469 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:11:22,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 10:11:22,469 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:11:22,470 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:11:22,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1241690344, now seen corresponding path program 1 times [2023-12-21 10:11:22,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:11:22,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798113009] [2023-12-21 10:11:22,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:11:22,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:11:22,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:22,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 10:11:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:22,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:11:22,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:22,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-12-21 10:11:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:22,683 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-21 10:11:22,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:11:22,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798113009] [2023-12-21 10:11:22,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798113009] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:11:22,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:11:22,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 10:11:22,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968198142] [2023-12-21 10:11:22,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:11:22,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 10:11:22,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:11:22,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 10:11:22,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 10:11:22,685 INFO L87 Difference]: Start difference. First operand 262 states and 361 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-21 10:11:23,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:11:23,017 INFO L93 Difference]: Finished difference Result 764 states and 1093 transitions. [2023-12-21 10:11:23,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 10:11:23,018 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 44 [2023-12-21 10:11:23,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:11:23,026 INFO L225 Difference]: With dead ends: 764 [2023-12-21 10:11:23,026 INFO L226 Difference]: Without dead ends: 504 [2023-12-21 10:11:23,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-21 10:11:23,037 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 114 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 10:11:23,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 167 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 10:11:23,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2023-12-21 10:11:23,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 391. [2023-12-21 10:11:23,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 265 states have (on average 1.3471698113207546) internal successors, (357), 296 states have internal predecessors, (357), 67 states have call successors, (67), 55 states have call predecessors, (67), 58 states have return successors, (93), 58 states have call predecessors, (93), 67 states have call successors, (93) [2023-12-21 10:11:23,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 517 transitions. [2023-12-21 10:11:23,141 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 517 transitions. Word has length 44 [2023-12-21 10:11:23,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:11:23,145 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 517 transitions. [2023-12-21 10:11:23,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-21 10:11:23,146 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 517 transitions. [2023-12-21 10:11:23,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-21 10:11:23,155 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:11:23,155 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:11:23,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 10:11:23,155 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:11:23,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:11:23,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1867103741, now seen corresponding path program 1 times [2023-12-21 10:11:23,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:11:23,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077314686] [2023-12-21 10:11:23,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:11:23,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:11:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:23,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-12-21 10:11:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:23,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:11:23,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:23,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-21 10:11:23,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:23,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:11:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:23,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 10:11:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:23,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-12-21 10:11:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:23,300 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 10:11:23,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:11:23,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077314686] [2023-12-21 10:11:23,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077314686] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:11:23,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 10:11:23,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 10:11:23,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022121905] [2023-12-21 10:11:23,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:11:23,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 10:11:23,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:11:23,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 10:11:23,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 10:11:23,304 INFO L87 Difference]: Start difference. First operand 391 states and 517 transitions. Second operand has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-21 10:11:23,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:11:23,658 INFO L93 Difference]: Finished difference Result 736 states and 1023 transitions. [2023-12-21 10:11:23,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 10:11:23,659 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 68 [2023-12-21 10:11:23,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:11:23,662 INFO L225 Difference]: With dead ends: 736 [2023-12-21 10:11:23,662 INFO L226 Difference]: Without dead ends: 301 [2023-12-21 10:11:23,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-21 10:11:23,667 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 125 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 10:11:23,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 297 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 10:11:23,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-12-21 10:11:23,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 224. [2023-12-21 10:11:23,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 156 states have (on average 1.2884615384615385) internal successors, (201), 170 states have internal predecessors, (201), 35 states have call successors, (35), 27 states have call predecessors, (35), 32 states have return successors, (53), 35 states have call predecessors, (53), 35 states have call successors, (53) [2023-12-21 10:11:23,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 289 transitions. [2023-12-21 10:11:23,710 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 289 transitions. Word has length 68 [2023-12-21 10:11:23,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:11:23,711 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 289 transitions. [2023-12-21 10:11:23,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-12-21 10:11:23,711 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 289 transitions. [2023-12-21 10:11:23,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-21 10:11:23,715 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:11:23,715 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:11:23,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 10:11:23,716 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:11:23,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:11:23,716 INFO L85 PathProgramCache]: Analyzing trace with hash 981504445, now seen corresponding path program 1 times [2023-12-21 10:11:23,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:11:23,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174841715] [2023-12-21 10:11:23,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:11:23,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:11:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:23,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 10:11:23,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:23,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:11:23,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:23,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-21 10:11:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:23,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:11:23,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:23,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 10:11:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:23,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 10:11:23,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:23,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:11:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:23,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 10:11:23,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:23,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:11:23,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:23,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 10:11:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:23,952 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 10:11:23,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:11:23,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174841715] [2023-12-21 10:11:23,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174841715] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:11:23,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1256649239] [2023-12-21 10:11:23,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:11:23,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:11:23,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:11:23,955 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:11:23,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 10:11:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:24,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 10:11:24,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:11:24,253 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-21 10:11:24,254 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 10:11:24,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1256649239] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:11:24,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 10:11:24,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 17 [2023-12-21 10:11:24,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870945842] [2023-12-21 10:11:24,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:11:24,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 10:11:24,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:11:24,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 10:11:24,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2023-12-21 10:11:24,257 INFO L87 Difference]: Start difference. First operand 224 states and 289 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-21 10:11:24,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:11:24,520 INFO L93 Difference]: Finished difference Result 732 states and 1043 transitions. [2023-12-21 10:11:24,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 10:11:24,521 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 5 states have call successors, (10) Word has length 84 [2023-12-21 10:11:24,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:11:24,524 INFO L225 Difference]: With dead ends: 732 [2023-12-21 10:11:24,524 INFO L226 Difference]: Without dead ends: 510 [2023-12-21 10:11:24,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2023-12-21 10:11:24,526 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 211 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 10:11:24,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 164 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 10:11:24,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2023-12-21 10:11:24,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 498. [2023-12-21 10:11:24,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 498 states, 349 states have (on average 1.2779369627507164) internal successors, (446), 375 states have internal predecessors, (446), 79 states have call successors, (79), 67 states have call predecessors, (79), 69 states have return successors, (161), 75 states have call predecessors, (161), 79 states have call successors, (161) [2023-12-21 10:11:24,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 686 transitions. [2023-12-21 10:11:24,584 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 686 transitions. Word has length 84 [2023-12-21 10:11:24,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:11:24,585 INFO L495 AbstractCegarLoop]: Abstraction has 498 states and 686 transitions. [2023-12-21 10:11:24,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 5 states have call successors, (10) [2023-12-21 10:11:24,585 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 686 transitions. [2023-12-21 10:11:24,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-21 10:11:24,589 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:11:24,589 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:11:24,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 10:11:24,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:11:24,796 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:11:24,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:11:24,797 INFO L85 PathProgramCache]: Analyzing trace with hash 759531713, now seen corresponding path program 1 times [2023-12-21 10:11:24,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:11:24,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015525573] [2023-12-21 10:11:24,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:11:24,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:11:24,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:24,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 10:11:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:24,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:11:24,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:24,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-21 10:11:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:24,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:11:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:24,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 10:11:24,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:24,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 10:11:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:24,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:11:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:24,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 10:11:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:24,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:11:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:24,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 10:11:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:24,902 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-21 10:11:24,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:11:24,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015525573] [2023-12-21 10:11:24,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015525573] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:11:24,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914713183] [2023-12-21 10:11:24,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:11:24,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:11:24,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:11:24,904 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:11:24,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 10:11:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:24,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-21 10:11:24,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:11:25,053 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-12-21 10:11:25,054 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:11:25,208 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 10:11:25,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914713183] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 10:11:25,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-21 10:11:25,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 9 [2023-12-21 10:11:25,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269222611] [2023-12-21 10:11:25,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:11:25,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 10:11:25,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:11:25,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 10:11:25,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-21 10:11:25,210 INFO L87 Difference]: Start difference. First operand 498 states and 686 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-21 10:11:25,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:11:25,364 INFO L93 Difference]: Finished difference Result 1268 states and 1825 transitions. [2023-12-21 10:11:25,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 10:11:25,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 84 [2023-12-21 10:11:25,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:11:25,369 INFO L225 Difference]: With dead ends: 1268 [2023-12-21 10:11:25,369 INFO L226 Difference]: Without dead ends: 772 [2023-12-21 10:11:25,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 182 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-21 10:11:25,372 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 99 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:11:25,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 157 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:11:25,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2023-12-21 10:11:25,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 766. [2023-12-21 10:11:25,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 540 states have (on average 1.2814814814814814) internal successors, (692), 583 states have internal predecessors, (692), 126 states have call successors, (126), 94 states have call predecessors, (126), 99 states have return successors, (291), 116 states have call predecessors, (291), 126 states have call successors, (291) [2023-12-21 10:11:25,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 1109 transitions. [2023-12-21 10:11:25,462 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 1109 transitions. Word has length 84 [2023-12-21 10:11:25,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:11:25,462 INFO L495 AbstractCegarLoop]: Abstraction has 766 states and 1109 transitions. [2023-12-21 10:11:25,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 4 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2023-12-21 10:11:25,462 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 1109 transitions. [2023-12-21 10:11:25,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-21 10:11:25,465 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:11:25,465 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:11:25,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 10:11:25,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-12-21 10:11:25,671 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:11:25,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:11:25,672 INFO L85 PathProgramCache]: Analyzing trace with hash 57931839, now seen corresponding path program 1 times [2023-12-21 10:11:25,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:11:25,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605845982] [2023-12-21 10:11:25,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:11:25,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:11:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:25,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 10:11:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:25,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:11:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:25,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-21 10:11:25,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:25,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:11:25,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:25,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 10:11:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:25,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 10:11:25,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:25,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:11:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:25,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 10:11:25,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:25,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:11:25,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:25,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 10:11:25,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:25,787 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-21 10:11:25,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:11:25,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605845982] [2023-12-21 10:11:25,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605845982] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:11:25,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689085736] [2023-12-21 10:11:25,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:11:25,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:11:25,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:11:25,788 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:11:25,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 10:11:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:25,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-21 10:11:25,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:11:25,883 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-21 10:11:25,884 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 10:11:25,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689085736] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:11:25,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 10:11:25,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-12-21 10:11:25,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327552924] [2023-12-21 10:11:25,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:11:25,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 10:11:25,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:11:25,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 10:11:25,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 10:11:25,886 INFO L87 Difference]: Start difference. First operand 766 states and 1109 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-21 10:11:25,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:11:25,968 INFO L93 Difference]: Finished difference Result 1550 states and 2364 transitions. [2023-12-21 10:11:25,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 10:11:25,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 84 [2023-12-21 10:11:25,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:11:25,976 INFO L225 Difference]: With dead ends: 1550 [2023-12-21 10:11:25,976 INFO L226 Difference]: Without dead ends: 786 [2023-12-21 10:11:25,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-21 10:11:25,981 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 2 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:11:25,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 222 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 10:11:25,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2023-12-21 10:11:26,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 774. [2023-12-21 10:11:26,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 548 states have (on average 1.2773722627737227) internal successors, (700), 591 states have internal predecessors, (700), 126 states have call successors, (126), 94 states have call predecessors, (126), 99 states have return successors, (291), 116 states have call predecessors, (291), 126 states have call successors, (291) [2023-12-21 10:11:26,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1117 transitions. [2023-12-21 10:11:26,051 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1117 transitions. Word has length 84 [2023-12-21 10:11:26,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:11:26,052 INFO L495 AbstractCegarLoop]: Abstraction has 774 states and 1117 transitions. [2023-12-21 10:11:26,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-21 10:11:26,052 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1117 transitions. [2023-12-21 10:11:26,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-21 10:11:26,058 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:11:26,059 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:11:26,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 10:11:26,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:11:26,266 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:11:26,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:11:26,266 INFO L85 PathProgramCache]: Analyzing trace with hash -674035587, now seen corresponding path program 1 times [2023-12-21 10:11:26,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:11:26,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510826390] [2023-12-21 10:11:26,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:11:26,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:11:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:26,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-12-21 10:11:26,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:26,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:11:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:26,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-21 10:11:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:26,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:11:26,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:26,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 10:11:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:26,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 10:11:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:26,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:11:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:26,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-12-21 10:11:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:26,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:11:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:26,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-12-21 10:11:26,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:26,494 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 10:11:26,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:11:26,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510826390] [2023-12-21 10:11:26,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510826390] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:11:26,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703481130] [2023-12-21 10:11:26,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:11:26,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:11:26,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:11:26,495 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:11:26,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 10:11:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:26,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-21 10:11:26,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:11:26,610 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-21 10:11:26,610 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 10:11:26,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703481130] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:11:26,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 10:11:26,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2023-12-21 10:11:26,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365232822] [2023-12-21 10:11:26,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:11:26,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 10:11:26,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:11:26,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 10:11:26,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-12-21 10:11:26,612 INFO L87 Difference]: Start difference. First operand 774 states and 1117 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-21 10:11:26,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:11:26,687 INFO L93 Difference]: Finished difference Result 1350 states and 1978 transitions. [2023-12-21 10:11:26,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 10:11:26,687 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) Word has length 84 [2023-12-21 10:11:26,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:11:26,690 INFO L225 Difference]: With dead ends: 1350 [2023-12-21 10:11:26,690 INFO L226 Difference]: Without dead ends: 578 [2023-12-21 10:11:26,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-12-21 10:11:26,694 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 6 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 10:11:26,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 220 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 10:11:26,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2023-12-21 10:11:26,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 560. [2023-12-21 10:11:26,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 395 states have (on average 1.268354430379747) internal successors, (501), 425 states have internal predecessors, (501), 92 states have call successors, (92), 72 states have call predecessors, (92), 72 states have return successors, (171), 82 states have call predecessors, (171), 92 states have call successors, (171) [2023-12-21 10:11:26,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 764 transitions. [2023-12-21 10:11:26,736 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 764 transitions. Word has length 84 [2023-12-21 10:11:26,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:11:26,736 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 764 transitions. [2023-12-21 10:11:26,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 2 states have call successors, (8) [2023-12-21 10:11:26,736 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 764 transitions. [2023-12-21 10:11:26,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-12-21 10:11:26,738 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:11:26,738 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:11:26,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-12-21 10:11:26,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:11:26,945 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:11:26,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:11:26,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1396290273, now seen corresponding path program 1 times [2023-12-21 10:11:26,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:11:26,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583985935] [2023-12-21 10:11:26,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:11:26,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:11:26,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:27,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-21 10:11:27,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:27,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-21 10:11:27,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:27,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:11:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:27,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-21 10:11:27,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:27,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:11:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:27,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 10:11:27,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:27,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-12-21 10:11:27,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:27,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:11:27,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:27,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2023-12-21 10:11:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:27,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:11:27,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:27,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 10:11:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:27,165 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 10:11:27,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:11:27,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583985935] [2023-12-21 10:11:27,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583985935] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:11:27,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252686500] [2023-12-21 10:11:27,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:11:27,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:11:27,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:11:27,167 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:11:27,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 10:11:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:27,244 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-21 10:11:27,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:11:27,348 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-21 10:11:27,348 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 10:11:27,471 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-21 10:11:27,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252686500] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 10:11:27,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-21 10:11:27,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13, 5] total 15 [2023-12-21 10:11:27,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123476836] [2023-12-21 10:11:27,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:11:27,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 10:11:27,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:11:27,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 10:11:27,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-12-21 10:11:27,473 INFO L87 Difference]: Start difference. First operand 560 states and 764 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 10:11:27,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:11:27,648 INFO L93 Difference]: Finished difference Result 1623 states and 2280 transitions. [2023-12-21 10:11:27,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 10:11:27,649 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2023-12-21 10:11:27,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:11:27,655 INFO L225 Difference]: With dead ends: 1623 [2023-12-21 10:11:27,655 INFO L226 Difference]: Without dead ends: 1065 [2023-12-21 10:11:27,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 195 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2023-12-21 10:11:27,658 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 54 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:11:27,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 341 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:11:27,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2023-12-21 10:11:27,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1041. [2023-12-21 10:11:27,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1041 states, 726 states have (on average 1.2300275482093663) internal successors, (893), 783 states have internal predecessors, (893), 177 states have call successors, (177), 137 states have call predecessors, (177), 137 states have return successors, (328), 154 states have call predecessors, (328), 177 states have call successors, (328) [2023-12-21 10:11:27,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1041 states to 1041 states and 1398 transitions. [2023-12-21 10:11:27,742 INFO L78 Accepts]: Start accepts. Automaton has 1041 states and 1398 transitions. Word has length 88 [2023-12-21 10:11:27,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:11:27,743 INFO L495 AbstractCegarLoop]: Abstraction has 1041 states and 1398 transitions. [2023-12-21 10:11:27,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2023-12-21 10:11:27,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1041 states and 1398 transitions. [2023-12-21 10:11:27,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-12-21 10:11:27,745 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:11:27,745 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:11:27,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 10:11:27,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-21 10:11:27,952 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:11:27,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:11:27,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1456918235, now seen corresponding path program 1 times [2023-12-21 10:11:27,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:11:27,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516267601] [2023-12-21 10:11:27,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:11:27,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:11:27,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:28,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-21 10:11:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:28,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-12-21 10:11:28,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:28,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-12-21 10:11:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:28,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:11:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:28,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-21 10:11:28,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:28,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:11:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:28,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 10:11:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:28,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-12-21 10:11:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:28,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:11:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:28,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 10:11:28,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:28,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:11:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:28,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-12-21 10:11:28,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:28,217 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 16 proven. 8 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-12-21 10:11:28,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:11:28,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516267601] [2023-12-21 10:11:28,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516267601] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:11:28,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872843339] [2023-12-21 10:11:28,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:11:28,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:11:28,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:11:28,219 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:11:28,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 10:11:28,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:28,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 10:11:28,299 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:11:28,443 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-12-21 10:11:28,443 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 10:11:28,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872843339] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:11:28,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 10:11:28,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17] total 23 [2023-12-21 10:11:28,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292996087] [2023-12-21 10:11:28,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:11:28,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 10:11:28,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:11:28,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 10:11:28,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2023-12-21 10:11:28,445 INFO L87 Difference]: Start difference. First operand 1041 states and 1398 transitions. Second operand has 8 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-21 10:11:28,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:11:28,652 INFO L93 Difference]: Finished difference Result 2036 states and 2748 transitions. [2023-12-21 10:11:28,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 10:11:28,653 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) Word has length 92 [2023-12-21 10:11:28,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:11:28,659 INFO L225 Difference]: With dead ends: 2036 [2023-12-21 10:11:28,659 INFO L226 Difference]: Without dead ends: 997 [2023-12-21 10:11:28,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2023-12-21 10:11:28,663 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 56 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:11:28,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 446 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:11:28,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2023-12-21 10:11:28,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2023-12-21 10:11:28,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 695 states have (on average 1.2115107913669065) internal successors, (842), 747 states have internal predecessors, (842), 173 states have call successors, (173), 133 states have call predecessors, (173), 128 states have return successors, (290), 145 states have call predecessors, (290), 173 states have call successors, (290) [2023-12-21 10:11:28,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1305 transitions. [2023-12-21 10:11:28,734 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1305 transitions. Word has length 92 [2023-12-21 10:11:28,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:11:28,735 INFO L495 AbstractCegarLoop]: Abstraction has 997 states and 1305 transitions. [2023-12-21 10:11:28,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (12), 3 states have call predecessors, (12), 5 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2023-12-21 10:11:28,735 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1305 transitions. [2023-12-21 10:11:28,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-21 10:11:28,739 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 10:11:28,739 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:11:28,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 10:11:28,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:11:28,945 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 10:11:28,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 10:11:28,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1383486908, now seen corresponding path program 1 times [2023-12-21 10:11:28,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 10:11:28,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527257476] [2023-12-21 10:11:28,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:11:28,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 10:11:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:29,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-21 10:11:29,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:29,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-21 10:11:29,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:29,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-12-21 10:11:29,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:29,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-21 10:11:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:29,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:11:29,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:29,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-12-21 10:11:29,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:29,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-12-21 10:11:29,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:29,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-21 10:11:29,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:29,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-12-21 10:11:29,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:29,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:11:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:29,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 10:11:29,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:29,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:11:29,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:29,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-21 10:11:29,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:29,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 10:11:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:29,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-21 10:11:29,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:29,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2023-12-21 10:11:29,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:29,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 10:11:29,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:29,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2023-12-21 10:11:29,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:29,239 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 51 proven. 14 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-12-21 10:11:29,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 10:11:29,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527257476] [2023-12-21 10:11:29,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527257476] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 10:11:29,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015743415] [2023-12-21 10:11:29,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 10:11:29,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:11:29,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 10:11:29,240 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 10:11:29,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-21 10:11:29,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 10:11:29,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 9 conjunts are in the unsatisfiable core [2023-12-21 10:11:29,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 10:11:29,483 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-21 10:11:29,484 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 10:11:29,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015743415] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 10:11:29,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 10:11:29,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17] total 22 [2023-12-21 10:11:29,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946393715] [2023-12-21 10:11:29,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 10:11:29,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 10:11:29,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 10:11:29,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 10:11:29,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2023-12-21 10:11:29,486 INFO L87 Difference]: Start difference. First operand 997 states and 1305 transitions. Second operand has 8 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-21 10:11:29,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 10:11:29,638 INFO L93 Difference]: Finished difference Result 1492 states and 1949 transitions. [2023-12-21 10:11:29,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 10:11:29,639 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) Word has length 131 [2023-12-21 10:11:29,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 10:11:29,641 INFO L225 Difference]: With dead ends: 1492 [2023-12-21 10:11:29,641 INFO L226 Difference]: Without dead ends: 0 [2023-12-21 10:11:29,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2023-12-21 10:11:29,646 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 51 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 10:11:29,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 477 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 10:11:29,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-21 10:11:29,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-21 10:11:29,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 10:11:29,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-21 10:11:29,647 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 131 [2023-12-21 10:11:29,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 10:11:29,647 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-21 10:11:29,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) [2023-12-21 10:11:29,647 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-21 10:11:29,647 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-21 10:11:29,650 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 10:11:29,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-12-21 10:11:29,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 10:11:29,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-21 10:11:33,161 INFO L899 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 818 825) no Hoare annotation was computed. [2023-12-21 10:11:33,162 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 818 825) the Hoare annotation is: (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (not (= 1 ~systemActive~0))) [2023-12-21 10:11:33,162 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 734 740) no Hoare annotation was computed. [2023-12-21 10:11:33,162 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 734 740) the Hoare annotation is: true [2023-12-21 10:11:33,162 INFO L899 garLoopResultBuilder]: For program point L640-1(lines 636 647) no Hoare annotation was computed. [2023-12-21 10:11:33,162 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 636 647) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (not (= ~methAndRunningLastTime~0 0)))) (and (or (not (= |old(~methaneLevelCritical~0)| 0)) (= ~methaneLevelCritical~0 0) .cse0 .cse1) (or (<= 1 ~methaneLevelCritical~0) (not (= ~pumpRunning~0 0)) .cse0 (< |old(~methaneLevelCritical~0)| 1) .cse1))) [2023-12-21 10:11:33,162 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 636 647) no Hoare annotation was computed. [2023-12-21 10:11:33,162 INFO L895 garLoopResultBuilder]: At program point L787(line 787) the Hoare annotation is: (let ((.cse6 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse8 (= ~pumpRunning~0 0)) (.cse9 (= ~methAndRunningLastTime~0 0)) (.cse11 (<= ~waterLevel~0 |old(~waterLevel~0)|)) (.cse10 (= 1 ~systemActive~0))) (let ((.cse7 (< |old(~waterLevel~0)| 1)) (.cse3 (< ~methaneLevelCritical~0 1)) (.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse1 (not .cse10)) (.cse2 (< |old(~waterLevel~0)| 2)) (.cse5 (not (= ~methaneLevelCritical~0 0))) (.cse4 (and .cse6 .cse8 .cse9 (<= 2 ~waterLevel~0) .cse10 .cse11))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse0 .cse1 .cse5 (and .cse6 (or .cse7 (< 0 ~waterLevel~0)) .cse8 .cse9 .cse10 .cse11)) (or (< 1 |old(~waterLevel~0)|) .cse0 .cse1 (and .cse6 .cse8 .cse9 (or .cse7 (= ~waterLevel~0 1)) .cse10 .cse11) .cse3) (or .cse0 .cse1 .cse2 .cse5 .cse4) (or (not (= |old(~pumpRunning~0)| 0)) (not (= 0 ~systemActive~0)))))) [2023-12-21 10:11:33,163 INFO L899 garLoopResultBuilder]: For program point L787-1(lines 768 792) no Hoare annotation was computed. [2023-12-21 10:11:33,163 INFO L899 garLoopResultBuilder]: For program point L721-1(lines 721 727) no Hoare annotation was computed. [2023-12-21 10:11:33,163 INFO L899 garLoopResultBuilder]: For program point L486(lines 486 496) no Hoare annotation was computed. [2023-12-21 10:11:33,163 INFO L899 garLoopResultBuilder]: For program point L482(lines 482 499) no Hoare annotation was computed. [2023-12-21 10:11:33,163 INFO L899 garLoopResultBuilder]: For program point L482-1(lines 474 502) no Hoare annotation was computed. [2023-12-21 10:11:33,163 INFO L899 garLoopResultBuilder]: For program point L714-1(lines 713 732) no Hoare annotation was computed. [2023-12-21 10:11:33,163 INFO L899 garLoopResultBuilder]: For program point L776(lines 776 784) no Hoare annotation was computed. [2023-12-21 10:11:33,163 INFO L899 garLoopResultBuilder]: For program point L487(lines 487 493) no Hoare annotation was computed. [2023-12-21 10:11:33,163 INFO L899 garLoopResultBuilder]: For program point L772(lines 772 789) no Hoare annotation was computed. [2023-12-21 10:11:33,163 INFO L899 garLoopResultBuilder]: For program point L54(line 54) no Hoare annotation was computed. [2023-12-21 10:11:33,167 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 710 733) the Hoare annotation is: (let ((.cse3 (= |old(~waterLevel~0)| ~waterLevel~0))) (let ((.cse0 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= ~methAndRunningLastTime~0 0) .cse3)) (.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse2 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 .cse2 (< ~methaneLevelCritical~0 1)) (or (not (= |old(~pumpRunning~0)| 0)) (and (= ~pumpRunning~0 0) .cse3 (= |old(~methAndRunningLastTime~0)| ~methAndRunningLastTime~0)) (not (= 0 ~systemActive~0))) (or .cse0 .cse1 .cse2 (not (= ~methaneLevelCritical~0 0)))))) [2023-12-21 10:11:33,167 INFO L899 garLoopResultBuilder]: For program point L616(lines 616 620) no Hoare annotation was computed. [2023-12-21 10:11:33,168 INFO L899 garLoopResultBuilder]: For program point L616-2(lines 612 623) no Hoare annotation was computed. [2023-12-21 10:11:33,169 INFO L895 garLoopResultBuilder]: At program point L480(line 480) the Hoare annotation is: (let ((.cse7 (= ~pumpRunning~0 0)) (.cse15 (<= 2 ~waterLevel~0)) (.cse9 (= 1 ~systemActive~0)) (.cse14 (<= ~waterLevel~0 |old(~waterLevel~0)|)) (.cse16 (= ~methaneLevelCritical~0 0))) (let ((.cse10 (= ~waterLevel~0 1)) (.cse2 (< |old(~waterLevel~0)| 1)) (.cse6 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse8 (= ~methAndRunningLastTime~0 0)) (.cse4 (not .cse16)) (.cse5 (and .cse16 .cse15 .cse9 .cse14)) (.cse12 (and .cse7 .cse9 .cse14)) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse3 (not .cse9)) (.cse11 (< |old(~waterLevel~0)| 2)) (.cse13 (< ~methaneLevelCritical~0 1))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (and .cse6 .cse7 .cse8 .cse9 .cse10)) (or .cse0 (and .cse7 (= |old(~waterLevel~0)| ~waterLevel~0) (= |old(~methAndRunningLastTime~0)| ~methAndRunningLastTime~0)) (not (= 0 ~systemActive~0))) (or .cse0 .cse1 .cse3 .cse11 .cse4 .cse5) (or .cse1 .cse3 .cse12 .cse13) (or (< 1 |old(~waterLevel~0)|) .cse0 .cse1 .cse2 .cse3 .cse10 .cse13) (or .cse0 .cse1 .cse2 .cse3 (and .cse6 .cse7 .cse8 .cse9) .cse13) (or (and .cse6 .cse8 .cse14) .cse1 .cse3 .cse4 .cse5 .cse12) (or .cse0 .cse1 .cse3 .cse15 .cse11 .cse13)))) [2023-12-21 10:11:33,169 INFO L899 garLoopResultBuilder]: For program point L480-1(line 480) no Hoare annotation was computed. [2023-12-21 10:11:33,169 INFO L895 garLoopResultBuilder]: At program point L782(line 782) the Hoare annotation is: (let ((.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse2 (not (= 1 ~systemActive~0))) (.cse3 (not (= ~methaneLevelCritical~0 0))) (.cse0 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse1 .cse2 (< ~methaneLevelCritical~0 1)) (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= ~methAndRunningLastTime~0 0) (<= ~waterLevel~0 |old(~waterLevel~0)|)) .cse1 .cse2 .cse3) (or .cse0 (not (= 0 ~systemActive~0))))) [2023-12-21 10:11:33,169 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 710 733) no Hoare annotation was computed. [2023-12-21 10:11:33,169 INFO L895 garLoopResultBuilder]: At program point L778(line 778) the Hoare annotation is: (let ((.cse2 (= 1 ~systemActive~0))) (let ((.cse1 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse3 (<= ~waterLevel~0 |old(~waterLevel~0)|)) (.cse7 (not (= ~methaneLevelCritical~0 0))) (.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse4 (not .cse2)) (.cse5 (< ~methaneLevelCritical~0 1)) (.cse6 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 (and .cse1 .cse2 .cse3 (<= ~methaneLevelCritical~0 |timeShift_processEnvironment_~tmp~6#1|)) .cse4 .cse5) (or .cse6 .cse0 .cse4 .cse7) (or (and .cse1 .cse2 .cse3) .cse0 .cse4 .cse7) (or .cse6 .cse0 .cse4 .cse5) (or .cse6 (not (= 0 ~systemActive~0)))))) [2023-12-21 10:11:33,169 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 54) no Hoare annotation was computed. [2023-12-21 10:11:33,170 INFO L895 garLoopResultBuilder]: At program point L774(line 774) the Hoare annotation is: (let ((.cse6 (= 1 ~systemActive~0))) (let ((.cse3 (not (= ~methaneLevelCritical~0 0))) (.cse4 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= ~methAndRunningLastTime~0 0) .cse6 (<= ~waterLevel~0 |old(~waterLevel~0)|))) (.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse2 (not .cse6)) (.cse5 (< ~methaneLevelCritical~0 1)) (.cse0 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse1 .cse2 .cse3 .cse4) (or .cse1 .cse2 .cse4 .cse5) (or .cse0 .cse1 .cse2 .cse5) (or .cse0 (not (= 0 ~systemActive~0)))))) [2023-12-21 10:11:33,170 INFO L899 garLoopResultBuilder]: For program point L774-1(line 774) no Hoare annotation was computed. [2023-12-21 10:11:33,170 INFO L902 garLoopResultBuilder]: At program point L512(line 512) the Hoare annotation is: true [2023-12-21 10:11:33,170 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 506 535) no Hoare annotation was computed. [2023-12-21 10:11:33,170 INFO L899 garLoopResultBuilder]: For program point L512-1(line 512) no Hoare annotation was computed. [2023-12-21 10:11:33,170 INFO L899 garLoopResultBuilder]: For program point L531(lines 506 535) no Hoare annotation was computed. [2023-12-21 10:11:33,170 INFO L899 garLoopResultBuilder]: For program point L527(line 527) no Hoare annotation was computed. [2023-12-21 10:11:33,170 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 506 535) the Hoare annotation is: true [2023-12-21 10:11:33,170 INFO L899 garLoopResultBuilder]: For program point L520(lines 520 524) no Hoare annotation was computed. [2023-12-21 10:11:33,170 INFO L902 garLoopResultBuilder]: At program point L520-1(lines 520 524) the Hoare annotation is: true [2023-12-21 10:11:33,170 INFO L902 garLoopResultBuilder]: At program point L516-2(lines 516 530) the Hoare annotation is: true [2023-12-21 10:11:33,170 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 648 656) the Hoare annotation is: true [2023-12-21 10:11:33,170 INFO L899 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 648 656) no Hoare annotation was computed. [2023-12-21 10:11:33,170 INFO L895 garLoopResultBuilder]: At program point L907(line 907) the Hoare annotation is: (and (= 1 ~systemActive~0) (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) [2023-12-21 10:11:33,171 INFO L899 garLoopResultBuilder]: For program point L928(lines 927 974) no Hoare annotation was computed. [2023-12-21 10:11:33,171 INFO L899 garLoopResultBuilder]: For program point L957(lines 957 970) no Hoare annotation was computed. [2023-12-21 10:11:33,171 INFO L895 garLoopResultBuilder]: At program point L949(line 949) the Hoare annotation is: (let ((.cse2 (= 1 ~systemActive~0)) (.cse0 (= ~pumpRunning~0 0)) (.cse1 (= ~methAndRunningLastTime~0 0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 (<= 1 ~methaneLevelCritical~0) .cse2 .cse3) (and .cse1 (= ~methaneLevelCritical~0 0) .cse2 .cse3) (and .cse0 .cse1 .cse3 (= 0 ~systemActive~0)))) [2023-12-21 10:11:33,171 INFO L899 garLoopResultBuilder]: For program point L978(lines 917 982) no Hoare annotation was computed. [2023-12-21 10:11:33,171 INFO L899 garLoopResultBuilder]: For program point L937(lines 937 943) no Hoare annotation was computed. [2023-12-21 10:11:33,171 INFO L899 garLoopResultBuilder]: For program point L937-1(lines 937 943) no Hoare annotation was computed. [2023-12-21 10:11:33,171 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-12-21 10:11:33,171 INFO L895 garLoopResultBuilder]: At program point L975(lines 926 976) the Hoare annotation is: false [2023-12-21 10:11:33,171 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-12-21 10:11:33,172 INFO L899 garLoopResultBuilder]: For program point L905(lines 905 911) no Hoare annotation was computed. [2023-12-21 10:11:33,172 INFO L899 garLoopResultBuilder]: For program point L905-1(lines 905 911) no Hoare annotation was computed. [2023-12-21 10:11:33,172 INFO L899 garLoopResultBuilder]: For program point L963(lines 963 969) no Hoare annotation was computed. [2023-12-21 10:11:33,172 INFO L895 garLoopResultBuilder]: At program point L963-2(lines 957 970) the Hoare annotation is: (let ((.cse0 (= ~methAndRunningLastTime~0 0)) (.cse1 (= 1 ~systemActive~0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 (<= 1 ~methaneLevelCritical~0) .cse1 .cse2) (and .cse0 (= ~methaneLevelCritical~0 0) .cse1 .cse2) (and (= ~pumpRunning~0 0) .cse2 (= 0 ~systemActive~0)))) [2023-12-21 10:11:33,172 INFO L899 garLoopResultBuilder]: For program point L947(lines 947 953) no Hoare annotation was computed. [2023-12-21 10:11:33,173 INFO L899 garLoopResultBuilder]: For program point L947-1(lines 947 953) no Hoare annotation was computed. [2023-12-21 10:11:33,173 INFO L899 garLoopResultBuilder]: For program point L592(lines 592 599) no Hoare annotation was computed. [2023-12-21 10:11:33,173 INFO L899 garLoopResultBuilder]: For program point L592-2(lines 592 599) no Hoare annotation was computed. [2023-12-21 10:11:33,173 INFO L895 garLoopResultBuilder]: At program point L972(lines 927 974) the Hoare annotation is: (let ((.cse2 (= 1 ~systemActive~0)) (.cse0 (= ~pumpRunning~0 0)) (.cse1 (= ~methAndRunningLastTime~0 0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 (<= 1 ~methaneLevelCritical~0) .cse2 .cse3) (and .cse1 (= ~methaneLevelCritical~0 0) .cse2 .cse3) (and .cse0 .cse1 .cse3 (= 0 ~systemActive~0)))) [2023-12-21 10:11:33,173 INFO L895 garLoopResultBuilder]: At program point L939(line 939) the Hoare annotation is: (let ((.cse2 (= 1 ~systemActive~0)) (.cse0 (= ~pumpRunning~0 0)) (.cse1 (= ~methAndRunningLastTime~0 0)) (.cse3 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 (<= 1 ~methaneLevelCritical~0) .cse2 .cse3) (and .cse1 (= ~methaneLevelCritical~0 0) .cse2 .cse3) (and .cse0 .cse1 .cse3 (= 0 ~systemActive~0)))) [2023-12-21 10:11:33,173 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 624 635) no Hoare annotation was computed. [2023-12-21 10:11:33,173 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 624 635) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse3 (not (= ~pumpRunning~0 0))) (.cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse2 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1 .cse2) (or .cse3 .cse0 .cse1 .cse2 (< ~methaneLevelCritical~0 1)) (or .cse3 .cse1 .cse2 (not (= 0 ~systemActive~0))))) [2023-12-21 10:11:33,173 INFO L899 garLoopResultBuilder]: For program point L628-1(lines 624 635) no Hoare annotation was computed. [2023-12-21 10:11:33,173 INFO L895 garLoopResultBuilder]: At program point L756(line 756) the Hoare annotation is: (let ((.cse5 (= 1 ~systemActive~0)) (.cse4 (= |old(~pumpRunning~0)| 0))) (let ((.cse1 (<= 1 |processEnvironment__wrappee__methaneQuery_isHighWaterSensorDry_#res#1|)) (.cse7 (not .cse4)) (.cse0 (not .cse5)) (.cse2 (= ~pumpRunning~0 0)) (.cse3 (= |processEnvironment__wrappee__methaneQuery_~tmp~5#1| 0)) (.cse6 (not (= ~methAndRunningLastTime~0 0))) (.cse8 (< ~methaneLevelCritical~0 1))) (and (or .cse0 (not (= ~methaneLevelCritical~0 0)) (and .cse1 .cse2 .cse3 .cse4) (and .cse2 .cse3 (<= 2 ~waterLevel~0) .cse5 .cse4) .cse6) (or .cse7 .cse1 .cse0 (< 1 ~waterLevel~0) .cse6 .cse8) (or .cse7 .cse0 (and .cse2 .cse3 .cse5 .cse4) .cse6 .cse8)))) [2023-12-21 10:11:33,173 INFO L899 garLoopResultBuilder]: For program point L750(lines 750 758) no Hoare annotation was computed. [2023-12-21 10:11:33,173 INFO L899 garLoopResultBuilder]: For program point L746(lines 746 763) no Hoare annotation was computed. [2023-12-21 10:11:33,174 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 742 766) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (not (= ~methAndRunningLastTime~0 0)))) (and (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1) (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) .cse0 .cse1 (< ~methaneLevelCritical~0 1)))) [2023-12-21 10:11:33,174 INFO L899 garLoopResultBuilder]: For program point L808(lines 808 814) no Hoare annotation was computed. [2023-12-21 10:11:33,175 INFO L895 garLoopResultBuilder]: At program point L806(line 806) the Hoare annotation is: (let ((.cse0 (= |old(~pumpRunning~0)| 0)) (.cse4 (= 1 ~systemActive~0))) (let ((.cse1 (not .cse4)) (.cse2 (and (= ~pumpRunning~0 0) (<= 2 ~waterLevel~0) .cse4 .cse0)) (.cse3 (not (= ~methAndRunningLastTime~0 0)))) (and (or (not .cse0) .cse1 .cse2 .cse3 (< ~methaneLevelCritical~0 1)) (or .cse1 (not (= ~methaneLevelCritical~0 0)) .cse2 .cse3)))) [2023-12-21 10:11:33,175 INFO L899 garLoopResultBuilder]: For program point L808-2(lines 801 817) no Hoare annotation was computed. [2023-12-21 10:11:33,175 INFO L899 garLoopResultBuilder]: For program point L806-1(line 806) no Hoare annotation was computed. [2023-12-21 10:11:33,175 INFO L899 garLoopResultBuilder]: For program point isHighWaterSensorDry_returnLabel#1(lines 689 702) no Hoare annotation was computed. [2023-12-21 10:11:33,175 INFO L899 garLoopResultBuilder]: For program point L891(lines 891 895) no Hoare annotation was computed. [2023-12-21 10:11:33,175 INFO L899 garLoopResultBuilder]: For program point L891-2(lines 891 895) no Hoare annotation was computed. [2023-12-21 10:11:33,175 INFO L895 garLoopResultBuilder]: At program point L761(line 761) the Hoare annotation is: (let ((.cse2 (not (= ~methaneLevelCritical~0 0))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse3 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 .cse1 .cse2 .cse3) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse1 .cse2 .cse3) (or .cse0 .cse1 .cse3 (< ~methaneLevelCritical~0 1)))) [2023-12-21 10:11:33,176 INFO L899 garLoopResultBuilder]: For program point L761-1(lines 742 766) no Hoare annotation was computed. [2023-12-21 10:11:33,176 INFO L899 garLoopResultBuilder]: For program point L693(lines 693 699) no Hoare annotation was computed. [2023-12-21 10:11:33,176 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__methaneQueryEXIT(lines 742 766) no Hoare annotation was computed. [2023-12-21 10:11:33,176 INFO L902 garLoopResultBuilder]: At program point L831(line 831) the Hoare annotation is: true [2023-12-21 10:11:33,176 INFO L899 garLoopResultBuilder]: For program point L831-1(line 831) no Hoare annotation was computed. [2023-12-21 10:11:33,176 INFO L899 garLoopResultBuilder]: For program point isMethaneAlarmEXIT(lines 826 836) no Hoare annotation was computed. [2023-12-21 10:11:33,177 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 826 836) the Hoare annotation is: true [2023-12-21 10:11:33,179 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 10:11:33,181 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-21 10:11:33,193 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 10:11:33 BoogieIcfgContainer [2023-12-21 10:11:33,194 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-21 10:11:33,194 INFO L158 Benchmark]: Toolchain (without parser) took 12883.54ms. Allocated memory was 209.7MB in the beginning and 406.8MB in the end (delta: 197.1MB). Free memory was 163.4MB in the beginning and 206.7MB in the end (delta: -43.3MB). Peak memory consumption was 180.0MB. Max. memory is 8.0GB. [2023-12-21 10:11:33,194 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 209.7MB. Free memory is still 168.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 10:11:33,194 INFO L158 Benchmark]: CACSL2BoogieTranslator took 428.99ms. Allocated memory is still 209.7MB. Free memory was 162.9MB in the beginning and 143.0MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-21 10:11:33,195 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.01ms. Allocated memory is still 209.7MB. Free memory was 143.0MB in the beginning and 140.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 10:11:33,195 INFO L158 Benchmark]: Boogie Preprocessor took 52.60ms. Allocated memory is still 209.7MB. Free memory was 140.9MB in the beginning and 138.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-21 10:11:33,196 INFO L158 Benchmark]: RCFGBuilder took 531.09ms. Allocated memory is still 209.7MB. Free memory was 138.2MB in the beginning and 116.8MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. [2023-12-21 10:11:33,196 INFO L158 Benchmark]: TraceAbstraction took 11804.64ms. Allocated memory was 209.7MB in the beginning and 406.8MB in the end (delta: 197.1MB). Free memory was 115.7MB in the beginning and 206.7MB in the end (delta: -91.0MB). Peak memory consumption was 132.8MB. Max. memory is 8.0GB. [2023-12-21 10:11:33,198 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 209.7MB. Free memory is still 168.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 428.99ms. Allocated memory is still 209.7MB. Free memory was 162.9MB in the beginning and 143.0MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 60.01ms. Allocated memory is still 209.7MB. Free memory was 143.0MB in the beginning and 140.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 52.60ms. Allocated memory is still 209.7MB. Free memory was 140.9MB in the beginning and 138.7MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 531.09ms. Allocated memory is still 209.7MB. Free memory was 138.2MB in the beginning and 116.8MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 8.0GB. * TraceAbstraction took 11804.64ms. Allocated memory was 209.7MB in the beginning and 406.8MB in the end (delta: 197.1MB). Free memory was 115.7MB in the beginning and 206.7MB in the end (delta: -91.0MB). Peak memory consumption was 132.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 49]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [49] - GenericResultAtLocation [Line: 58]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [58] - GenericResultAtLocation [Line: 96]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [96] - GenericResultAtLocation [Line: 462]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [462] - GenericResultAtLocation [Line: 503]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [503] - GenericResultAtLocation [Line: 605]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"Environment.i","") [605] - GenericResultAtLocation [Line: 703]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"MinePump.i","") [703] - GenericResultAtLocation [Line: 916]: Unsoundness Warning Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [916] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 54]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 82 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.7s, OverallIterations: 13, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 929 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 881 mSDsluCounter, 3069 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1959 mSDsCounter, 187 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1496 IncrementalHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 187 mSolverCounterUnsat, 1110 mSDtfsCounter, 1496 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1107 GetRequests, 988 SyntacticMatches, 4 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1041occurred in iteration=11, InterpolantAutomatonStates: 73, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 13 MinimizatonAttempts, 265 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 27 LocationsWithAnnotation, 2356 PreInvPairs, 2542 NumberOfFragments, 1228 HoareAnnotationTreeSize, 2356 FormulaSimplifications, 2410 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 27 FormulaSimplificationsInter, 16244 FormulaSimplificationTreeSizeReductionInter, 2.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 1486 NumberOfCodeBlocks, 1486 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 1636 ConstructedInterpolants, 0 QuantifiedInterpolants, 2802 SizeOfPredicates, 12 NumberOfNonLiveVariables, 2339 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 22 InterpolantComputations, 13 PerfectInterpolantSequences, 749/802 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 516]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 926]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 927]: Loop Invariant Derived loop invariant: (((((((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (1 <= methaneLevelCritical)) && (1 == systemActive)) && (splverifierCounter == 0)) || ((((methAndRunningLastTime == 0) && (methaneLevelCritical == 0)) && (1 == systemActive)) && (splverifierCounter == 0))) || ((((pumpRunning == 0) && (methAndRunningLastTime == 0)) && (splverifierCounter == 0)) && (0 == systemActive))) RESULT: Ultimate proved your program to be correct! [2023-12-21 10:11:33,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...